World of Ptavvs by Larry Niven

Paperback. Condition: Very Good. 1966. Ballantine Books. 1st Edition. Signed.

Signed by author.

Niven's first book. Larry Greenberg's telepathic abilities had been trained and developed to a critical level. But when Larry's mind is taken over by an alien force, he has to fight to retain his sanity - and divert a disaster that threatens all mankind.